强和弱Y-Y相互作用下的奇异强子物质

原子核物理评论 , 2004, 21(2): 137-141. doi: 10.3969/j.issn.1007-4627.2004.02.019

强和弱Y-Y相互作用下的奇异强子物质

宋宏秋 ^1, , 苏汝铿 ^2, , 鲁定辉 ^3, , 钱伟良 ^4,

1.中国科学院上海应用物理研究所,上海,201800

2.复旦大学物理系,上海,200433

3.浙江大学物理系,浙江杭州,310027

4.复旦大学物理系,上海,200433

基金项目: 国家自然科学基金(19975010,10075071,10047005,19947001,10235030) 中国科学院知识创新工程项目(KJCX2-No11)

关键词：修正的夸克-介子耦合模型 , 奇异强子物质 , 超子-超子相互作用

Strange Hadronic Matter with Strong and Weak Y-Y Interactions

把修正的夸克-介子耦合模型推广到包含奇异性的情形,并用来研究奇异强子物质的状态方程.从最新的6ΛΛHe双超核的实验导出的弱Λ-Λ相互作用和过去采用的强Λ-Λ相互作用同时被用于计算.比较发现,具有强Λ-Λ相互作用的系统束缚得比正常核物质要紧,而具有弱Λ-Λ相互作用的系统则比正常核物质束缚得要松得多.无论强还是弱相互作用情况,为了合适地描述修正的夸克-介子耦合模型中超子-超子(Y-Y)相互作用,必须引进σ*和φ介子.

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强和弱Y-Y相互作用下的奇异强子物质

Strange Hadronic Matter with Strong and Weak Y-Y Interactions

参考文献